© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 09/13/17
TVS Diodes
Surface Mount > 200W > SMF5.0AT1G Series
• Stand−off Voltage: 5 − 58 Volts
• Peak Power − 200 Watts @ 1 ms (SMF5.0A − SMF58A)
• Low Leakage
• Response Time is Typically < 1 ns
• ESD Rating of Class 3 (> 16 kV) per Human Body Model
• ESD Rating of Level 4 (8 kV Contact Discharge) per
IEC61000−4−2
• EFT (Electrical Fast Transients) Rating of 40 A per
IEC61000−4−4
• Low Profile − Maximum Height of 1.0 mm
• Small Footprint − Footprint Area of 8.45 mm2
• Supplied in 8 mm Tape and Reel − 3,000 Units per Reel
• Cathode Indicated by Polarity Band
• Lead Orientation in Tape: Cathode Lead to Sprocket Holes
• These Devices are Pb−Free and are RoHS Compliant
Features
The SMF5.0AT1G Series is designed to protect voltage
sensitive components from high voltage, high energy
transients. Excellent clamping capability, high surge
capability, low zener impedance and fast response time.
Because of its small size, it is ideal for use in cellular
phones, portable devices, business machines, power
supplies and many other industrial/consumer applications.
Description
Rating Symbol Value Unit
Maximum Ppk Dissipation (PW−10/1000
µs) (Note 1) SMF5.0A − SMF58A PPK 200 W
Maximum Ppk Dissipation @ TA = 25°C,
(PW−8/20 µs) (Note 2) PPK 1000 W
DC Power Dissipation @ TA = 25°C
(Note 3)
Derate Above 25°C
Thermal Resistance from Junction−to−
Ambient (Note 3)
PD
R8JA
385
4.0
325
mW
mW/°C
°C/W
Operating and Storage Temperature
Range TJ, Tstg
−55 to
+150 °C
Maximum Ratings and Thermal Characteristics
SMF5.0AT1G Series
Functional Diagram
Bi-directional
Uni-directional
Cathode Anode
Pb
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are
stress ratings only. Functional operation above the Recommended Operating Conditions is
not implied. Extended exposure to stresses above the Recommended Operating Conditions
may affect device reliability.
1. Non−repetitive current pulse at TA = 25°C, per waveform of Figure 2.
2. Non−repetitive current pulse at TA = 25°C, per waveform of Figure 3.
3. Mounted with recommended minimum pad size, DC board FR−4.
Additional Information
Samples
Resources
Datasheet
OBSOLETE/EOL
DATE June/30/2018 PCN/ECN# LFPCN41246
REPLACED BY SMF Series
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 09/13/17
TVS Diodes
Surface Mount > 200W > SMF5.0AT1G Series
Symbol Parameter
IPP Maximum Reverse Peak Pulse Current
VCClamping Voltage @ IPP
VRWM Working Peak Reverse Voltage
IRMaximum Reverse Leakage Current @ VRWM
VBR Breakdown Voltage @ IT
ITTest Current
IFForward Current
VFForward Voltage @ IF
I-V Curve Characteristics (TA = 25°C unless otherwise noted, VF = 3.5 V Max. @ IF (Note 4) = 12 A)
Figure 1. Pulse Rating Curve
Ratings and Characteristic Curves
Figure 2. 10 X 1000 µs Pulse Waveform
Figure 3. 8 X 20 µs Pulse Waveform Figure 4. Pulse Derating Curve
I
I
V
I
I
I
t
100
1000
10,000
1.01 0 100
10
1000 10,000
0
100
I
2
I
tr
tP
.
tʺ 10 s
100
60
20
10
0
tP
tr
PULSE WIDTH (t
P) IS DEFINED
AS THAT POINT WHERE THE
PEAK CURRENT DECAY = 8 s
PEAK VALUE I
RSM
@ 8 s
HALF VALUE IRSM
/2 @ 20 s
100
60
20
0
°
120
160
°
4. 1/2 sine wave (or equivalent square wave), PW = 8.3 ms, duty cycle = 4 pulses per
minute maximum.
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 09/13/17
TVS Diodes
Surface Mount > 200W > SMF5.0AT1G Series
Figure 5. Typical Derating Factor for Duty Cycle
Figure 7. Forward Voltage
Figure 6. Steady State Power Derating
Figure 8. Capacitance vs. Working Peak Reverse Voltage
°
200
100
0
0
10 s
1
0.1
0.2
0.01
0.02 100 s
001021
1.2
1.0
0.6
0.2
0
°
1000
100
1
0001011
10
100
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 09/13/17
TVS Diodes
Surface Mount > 200W > SMF5.0AT1G Series
Electrical Characteristics (TL = 30°C unless otherwise noted, VF = 1.25 Volts @ 200 mA)
Device Device
Marking
VRWM IR @ VRWM VBR @ IT (V) (Note 6) @ ITIR @ VRWM VC(Max) IPP(Max)
(A)
V μA Min Nom Max mA (µA) (V) (Note 7)
SMF5.0AG KE 5400 6.4 6.7 7. 0 10 400 9.2 21.7
SMF6.0AG KG 6400 6.67 7.02 7.37 10 400 10.3 19.4
SMF6.5AG KK 6.5 250 7.22 7.60 7.98 10 250 11. 2 1 7. 9
SMF7.0AG KM 710 0 7.78 8.19 8.6 10 100 12 16.7
SMF7.5AG KP 7. 5 50 8.33 8.77 9.21 150 12.9 15.5
SMF8.0AG KR 825 8.89 9.36 9.83 125 13.6 14.7
SMF9.0AG KV 9 5 10 10.55 11. 1 1 5 15.4 13.0
SMF10AG KX 10 2.5 11. 1 11. 7 12.3 12.5 17 11. 8
SMF11AG KZ 11 2.5 12.2 12.85 13.5 12.5 18.2 11. 0
SMF12AG LE 12 2.5 13.3 14 14.7 12.5 19.9 10.1
SMF13AG LG 13 114.4 15.15 15.9 1 1 21.5 9.3
SMF14AG LK 14 115.6 16.4 1 7. 2 1 1 23.2 8.6
SMF15AG LM 15 116.7 1 7. 6 18.5 1 1 24.4 8.2
SMF18AG LT 18 120 21 22.1 1 1 29.2 6.8
SMF20AG LV 20 122.2 23.35 24.5 1 1 32.4 6.2
SMF22AG LX 22 124.4 25.6 26.9 1 1 35.5 5.6
SMF24AG LZ 24 126.7 28.1 29.5 1 1 38.9 5.1
SMF26AG ME 26 128.9 30.4 31.9 1 1 42.1 4.8
SMF28AG MG 28 131.1 32.8 34.4 1 1 45.4 4.4
SMF30AG MK 30 133.3 35.1 36.8 1 1 48.4 4.1
SMF33AG MM 33 136.7 38.7 40.6 1 1 53.3 3.8
SMF36AG MP 36 140 42.1 44.2 1 1 58.1 3.4
SMF48AG MX 48 153.3 56.1 58.9 1 1 77.4 2.6
SMF51AG MZ 51 156.7 59.7 62.7 1 1 82.4 2.4
SMF58AG NG 58 164.4 67.8 71.2 1 1 93.6 2.1
5. A transient suppressor is normally selected according to the Working Peak Reverse Voltage (VRWM) which
should be equal to or greater than the DC or continuous peak operating voltage level.
6. VBR measured at pulse test current IT at ambient temperature of 25°C.
7. Surge current waveform per Figure 2 and derate per Figure 3.
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 09/13/17
TVS Diodes
Surface Mount > 200W > SMF5.0AT1G Series
Dimensions
Part Marking System
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSIONS A AND B DO NOT INCLUDE MOLD FLASH.
4. DIMENSIONS D AND J ARE TO BE MEASURED ON FLAT SECTION
OF THE LEAD: BETWEEN 0.10 AND 0.25 MM FROM THE LEAD TIP.
Physical Specifications
Case Void-free, transfer-molded, thermosetting
plastic Epoxy Meets UL 94 V−0
Lead Finish 100% Matte Sn (Tin)
Mounting Position Any
ORDERING INFORMATION
Device Package Shipping†
SMFxxxAT1G SOD−123FL
(Pb−Free)
3,000 /
Tape & Reel
Flow/Wave Soldering (Solder Dipping)
Peak Temperature :
260ºC
Device Meets MSL 1
Requirements
Dim
Inches Millimeters
Min Nom Max Min Nom Max
A0.035 0.037 0.039 0.90 0.95 0.98
A1 0.000 0.002 0.004 0.00 0.05 0.10
b0.028 0.035 0.043 0.70 0.90 1. 10
c0.004 0.006 0.008 0.10 0.15 0.20
D0.059 0.065 0.071 1.50 1.65 1.80
E0.098 0.106 0.114 2.50 2.70 2.90
L0.022 0.030 0.037 0.55 0.75 0.95
HE0.13 4 0.142 0.150 3.40 3.60 3.80
00° −8° 0° −8°
Soldering Footrpint
1 2
D
E
b
A
A1
L
c
POLARITY INDICATOR
OPTIONAL AS NEEDED
TOP VIEW
BOTTOM VIEW
SIDE VIEW
H
E
2X
2X
END VIEW
21
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reliable. However, users should independently evaluate the suitability of and
test each product selected for their own applications. Littelfuse products are
not designed for, and may not be used in, all applications. Read complete
Disclaimer Notice at: www.littelfuse.com/disclaimer-electronics.
